BEGIN;
BEGIN
create or replace view revenue8 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-07-01'
		and l_shipdate < date'1995-07-01' + interval '90 days'
	group by
		l_suppkey;
CREATE VIEW
EXPLAIN (ANALYZE, BUFFERS)
select
	s_suppkey,
	s_name,
	s_address,
	s_phone,
	total_revenue
from
	supplier,
	revenue8
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue8
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2360127.33..2365224.47 rows=3712 width=79) (actual time=46687.566..46687.570 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue8.supplier_no)
   Buffers: shared hit=693612 read=627032 dirtied=184 written=40099
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1171570.23..1171570.24 rows=1 width=8) (actual time=19517.444..19517.444 rows=1 loops=1)
           Buffers: shared hit=413839 read=245922 written=12
           ->  HashAggregate  (cost=1171486.71..1171523.83 rows=3712 width=12) (actual time=19413.172..19500.142 rows=100000 loops=1)
                 Buffers: shared hit=413839 read=245922 written=12
                 ->  Bitmap Heap Scan on lineitem  (cost=47377.43..1149131.00 rows=2235571 width=12) (actual time=4882.833..15298.183 rows=2245809 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=413839 read=245922 written=12
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46818.54 rows=2235571 width=0) (actual time=4449.659..4449.659 rows=2252414 loops=1)
                             Index Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6139
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.074..24.794 rows=40959 loops=1)
         Buffers: shared hit=1121
   ->  Sort  (cost=1188557.09..1188566.37 rows=3712 width=12) (actual time=46657.339..46657.339 rows=1 loops=1)
         Sort Key: revenue8.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=692491 read=627032 dirtied=184 written=40099
         ->  Subquery Scan on revenue8  (cost=1188253.49..1188337.01 rows=3712 width=12) (actual time=46650.886..46657.303 rows=1 loops=1)
               Buffers: shared hit=692491 read=627032 dirtied=184 written=40099
               ->  HashAggregate  (cost=1188253.49..1188299.89 rows=3712 width=12) (actual time=46650.883..46657.296 rows=1 loops=1)
                     Filter: (sum((public.lineitem.l_extendedprice * (1::double precision - public.lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=692491 read=627032 dirtied=184 written=40099
                     ->  Bitmap Heap Scan on lineitem  (cost=47377.43..1149131.00 rows=2235571 width=12) (actual time=7325.522..22692.149 rows=2245809 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=278652 read=381110 dirtied=184 written=40087
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46818.54 rows=2235571 width=0) (actual time=6918.714..6918.714 rows=2252267 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=5375 read=765
 Total runtime: 46718.349 ms
(33 rows)

drop view revenue8;
DROP VIEW
COMMIT;
COMMIT